UniProtKB/Swiss-Prot P05546: Variant p.Arg208His

Heparin cofactor 2
Gene: SERPIND1
Chromosomal location: 22q11.2
Variant information

Variant position:  208
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Arginine (R) to Histidine (H) at position 208 (R208H, p.Arg208His).
Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:  Change from large size and basic (R) to medium size and polar (H)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  0
The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Involvement in disease:  Thrombophilia due to heparin cofactor 2 deficiency (THPH10) [MIM:612356]: A hemostatic disorder characterized by a tendency to recurrent thrombosis. {ECO:0000269|PubMed:10391209, ECO:0000269|PubMed:11204559, ECO:0000269|PubMed:15337701, ECO:0000269|PubMed:2647747}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In THPH10; Oslo; decreased affinity for dermatan sulfate.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  208
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  499
The length of the canonical sequence.

Location on the sequence:   NASSKYEITTIHNLFRKLTH  R LFRRNFGYTLRSVNDLYIQK
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Residue conservation: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         NASSKYEITTIHNLFRKLTHRLFRRNFGYTLRSVNDLYIQK

Mouse                         NASSKYEVTTIHNLFRKLTHRLFRRNFGYTLRSVNGLYIQK

Rat                           NASSKYEVTTIHNLFRKLTHRLFRRNFGYTLQSVNDLYIQK

Rabbit                        NASSKYEILTIHNLFRKLTHRLFRRNFGYTLRSVNDLYVQK

Sequence annotation in neighborhood:  
The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.

TypePositionsDescription
Chain 20 – 499 Heparin cofactor 2
Region 192 – 212 Glycosaminoglycan-binding site
Glycosylation 188 – 188 N-linked (GlcNAc...)
Mutagenesis 204 – 204 K -> M. Reduced heparin- and no dermatan sulfate-activated inhibition.
Mutagenesis 204 – 204 K -> N. Reduced heparin- and no dermatan sulfate-activated inhibition.
Mutagenesis 204 – 204 K -> T. Reduced heparin- and no dermatan sulfate-activated inhibition.
Helix 195 – 210


Literature citations

Heparin cofactor IIOslo. Mutation of Arg-189 to His decreases the affinity for dermatan sulfate.
Blinder M.A.; Andersson T.R.; Abildgaard U.; Tollefsen D.M.;
J. Biol. Chem. 264:5128-5133(1989)
Cited for: VARIANT THPH10 HIS-208;

Characterization of single-nucleotide polymorphisms in coding regions of human genes.
Cargill M.; Altshuler D.; Ireland J.; Sklar P.; Ardlie K.; Patil N.; Shaw N.; Lane C.R.; Lim E.P.; Kalyanaraman N.; Nemesh J.; Ziaugra L.; Friedland L.; Rolfe A.; Warrington J.; Lipshutz R.; Daley G.Q.; Lander E.S.;
Nat. Genet. 22:231-238(1999)
Cited for: VARIANT THPH10 HIS-208; VARIANTS THR-7 AND MET-442;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.